Nostrum Oil&gas Regulatory News (NOG)

NOTIFICATION OF MAJOR HOLDINGS

1a. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached:

Nostrum Oil & Gas plc

1b. Please indicate if the issuer is a non-UK issuer (please mark with an "X" if appropriate)

Non-UK issuer

2. Reason for the notification (please mark the appropriate box or boxes with an "X")

An acquisition or disposal of voting rights

X

An acquisition or disposal of financial instruments

An event changing the breakdown of voting rights

Other (please specify):

3. Details of person subject to the notification obligation

Name

Aggregate of Standard Life Aberdeen plc affiliated investment management entities with delegated voting rights on behalf of multiple managed portfolios

City and country of registered office (if applicable)

Edinburgh, Scotland

4. Full name of shareholder(s) (if different from 3.)

Name

City and country of registered office (if applicable)

5. Date on which the threshold was crossed or reached:

23/11/2018

6. Date on which issuer notified (DD/MM/YYYY):

26/11/2018

7. Total positions of person(s) subject to the notification obligation

% of voting rights attached to shares (total of 8. A)

% of voting rights through financial instruments(total of 8.B 1 + 8.B 2)

Total of both in % (8.A + 8.B)

Total number of voting rights of issuer

Resulting situation on the date on which threshold was crossed or reached

6.11

0.00

6.11

188,182,958

Position of previous notification (if

applicable)

5.15

0.00

5.15

8. Notified details of the resulting situation on the date on which the threshold was crossed or reached

A: Voting rights attached to shares

Class/type ofshares

ISIN code (if possible)

Number of voting rights

% of voting rights

Direct

(Art 9 of Directive 2004/109/EC) (DTR5.1)

Indirect

(Art 10 of Directive 2004/109/EC) (DTR5.2.1)

Direct

(Art 9 of Directive 2004/109/EC) (DTR5.1)

Indirect

(Art 10 of Directive 2004/109/EC) (DTR5.2.1)

GB00BGP6Q951

N/A

11,504,064

N/A

6.11

SUBTOTAL 8. A

11,504,064

6.11

B 1: Financial Instruments according to Art. 13(1)(a) of Directive 2004/109/EC (DTR5.3.1.1 (a))

Type of financial instrument

Expirationdate

Exercise/Conversion Period

Number of voting rights that may be acquired if the instrument is

Exercised/converted.

% of voting rights

SUBTOTAL 8. B 1

B 2: Financial Instruments with similar economic effect according to Art. 13(1)(b) of Directive 2004/109/EC (DTR5.3.1.1 (b))

Type of financial instrument

Expirationdate

Exercise/Conversion Period 

Physical or cash

settlement

Number of voting rights

% of voting rights

SUBTOTAL 8.B.2

9. Information in relation to the person subject to the notification obligation (please mark the

applicable box with an "X")

Person subject to the notification obligation is not controlled by any natural person or legal entity and does not control any other undertaking(s) holding directly or indirectly an interest in the (underlying) issuer

Full chain of controlled undertakings through which the voting rights and/or thefinancial instruments are effectively held starting with the ultimate controlling natural person or legal entity (please add additional rows as necessary)

X

Name

% of voting rights if it equals or is higher than the notifiable threshold

% of voting rights through financial instruments if it equals or is higher than the notifiable threshold

Total of both if it equals or is higher than the notifiable threshold

Standard Life Aberdeen plc

Standard Life Investments (Holdings) Limited

Standard Life Investments Limited

5.30

0.00

5.30

Standard Life Aberdeen plc

Aberdeen Asset Management PLC

Aberdeen Asset Investment Group Limited

Aberdeen Asset Investments Limited

Standard Life Aberdeen plc

Aberdeen Asset Management PLC

Aberdeen Asset Managers Limited

10. In case of proxy voting, please identify:

Name of the proxy holder

N/A

The number and % of voting rights held

N/A

The date until which the voting rights will be held

N/A

11. Additional information

In reference to Section 9, the shares detailed are managed by the named discretionary investment management entity within multiple portfolios on behalf of underlying clients, based on investment management agreements whereby the client has delegated the exercise of the voting power to the referenced investment manager.

This disclosure is to reflect the fact that the voting rights effectively held indirectly by the underlying intermediate holding company Standard Life Investments (Holdings) Limited ("SLIHL") and held by the underlying investment management entity Standard Life Investments Limited ("SLIL") increased above the 5% notifiable threshold of the delegated voting rights in Nostrum Oil & Gas plc due to trading on 23 November 2018. SLIHL now effectively holds 5.30% and SLIL holds the delegated voting rights to 5.30% of the shares in Nostrum Oil & Gas plc.

Place of completion

Aberdeen, United Kingdom

Date of completion

26/11/2018